New cellulose reactive dyestuffs

ABSTRACT

WHEREIN R1 represents H or an alkyl group and R2 represents an alkyl, aryl or substituted aryl group, or R1 and R2 together form with the N atom a five or six-membered heterocyclic ring, EACH N INDEPENDENTLY REPRESENTS 0 OR 1, EACH Y independently represents H, a methyl group or the two together represent an oxygen atom, X represents SO3 or may be CO2 if Y, Y is -O-, Am is the NH group or an amine or a diamine radical having the SO2 group attached to the nitrogen or one of the two nitrogen atoms, and Z is a cellulose-reactive group attached to a carbon or nitrogen atom in the radical Am. They provide brilliant yellowish-red to bluish-red shades having a surprisingly high lightfastness.   Reactive dyestuffs of the triphenylmethane or xanthene series having the formula:

United States Patent 1 Austin NEW CELLULOSE REACTIVE DYESTUFFS [75] inventor: Peter William Austin, Blackley,

Manchester, England {73] Assignee: Imperial Chemical Industries Limited, London, England [22] Filed: Dec. 4, 1972 [21] Appl. No.: 311,522

[30] Foreign Application Priority Data Dec. l5, l97l United Kingdom 58228/71 [52] U.S. Cl. 2450/2495; 8/12; 8/54;

R; 260/250 R; 260/25] Q; 260/256 R;

[51] Int. Cl. CO7d 55/18; CO7d 55/20 v[58] Field of Search 260/249.5, 240 B, 336

[56] References Cited UNITED STATES PATENTS 3,647,827 3/1972 Sigiyama et al 260/372 Primary Examiner-John D. Randolph Attorney, Agent, or Firm-Cushman, Darby & Cushman [57] ABSTRACT Reactive dyestuffs of. the triphenylrnethane or xanthene series having the formula:

is] May 13,1975

wherein R represents H or an alkyl group and R represents an alkyl, aryl or substituted aryl group, or R and R together form with the N atom a five or sixmembered heterocyclic ring,

each n independently represents 0 or I, each Y independently represents H. a methyl group or the two together represent an oxygen atom, X- represents 505 or may be CO; if Y, Y is -O, Am is the NH group or an amine or a diamine radical having the S0 group attached to the nitrogen or one of the two nitrogen atoms, and Z is a cellulose-reactive group attached to a carbon or nitrogen atom in the radical Ami They provide brilliant yellowish-red to bluishred shades having a surprisingly high lightfastness.

2 Claims, No Drawings NEW CELLULOSE REACTIVE DYESTUFFS This invention relates to new cellulose-reactive dyestuffs and more particularly to new cellulose-reactive dyestuffs of the triphenylmethane or xanthene series.

It has been found that valuable cellulose-reactive dyes having the extremely bright shades characteristic of these series but with an unexpectedly high degree of light-fastness can be obtained by having a cellulosereactive group linked through an amine or diamine residue to a sulphonyl group in one of the phenyl nuclei in certain members of these series.

According to the invention there are provided the dyestuffs of the formula:

wherein R represents H or an alkyl group and R represents an alkyl, aryl or substituted aryl group, or R and R together form with the N atom a live or sixmembered heterocyclic ring,

each n independently represents or 1,

each Y independently represents H, a methyl group or the two together represent an oxygen atom,

X represents 80;, or may be CO if Y, Y is O,

Am is the NH group or an amine or a diamine radical having the S0 group attached to the nitrogen or one of the 2 nitrogen atoms, and Z is a cellulose reactive group attached to a carbon or nitrogen atom in the radical Am,

The alkyl groups represented by R and R in formula (1 may be of any length but are preferably those containing up to 4 carbon atoms, e.g. methyl, ethyl, npropyl, and n-butyl.

As examples of aryl or substituted aryl radicals represented by R there may be mentioned more especially radicals ofthe benzene series in which the benzene ring or rings may be substituted, eg by halogen atoms eg F, Cl or Br, CF or N0 As examples of cellulose-reactive groups represented by Z, there may be mentioned aliphatic sulphone groups which contain a sulphate ester group in B-position to the sulphur atom, eg the B-sulphatoethylsulphone group, afi-unsaturated acyl radicals of aliphatic carboxylic acids for example, acrylic acid, a-chloroacrylic acid, propiolic acid, maleic acid and mono and dichloro-maleic acids; also the acyl radicals of the acids which contain a substituent which reacts with cellulose or polyamides in the presence of an alkali, eg the radical of a halogenated aliphatic acid such as chloroacetic acid, B-chloro and B-bromo-propionic acids and a,B-dichloro and dibromo-propionic acids. Other examples of cellulose or polyamide-reactive groups are tetrafluorocyclobutane carbonyl, trifluorocyclobutene carbonyl, tetrafluorocyclobutylethenyl carbonyl, trifluorocyclobuteneethenyl carbonyl, and heterocyclic radicals which contain 2 or 3 nitrogen atoms in the heterocyclic ring and at least one cellulose-reactive substituent on a carbon atom of the ring.

As examples of such heterocyclic radicals, there may be mentioned, for example 2:3-dichloro-quinoxaline-5- or -6-sulphonyl,

2:3-dichloro-quinoxalinc-5- or -6 carbonyl,

2:4-dichloro-quinazoline-6- or -7-sulphonyl,

2:4:o-trichloro-quinazoline-7- or -8-sulphonyl,

2:4:7- or 2:4:S-trichloro-quinazoline-fi-sulphonyl,

2:4-dichloro-quinazolineo-carbonyl,

l:4-dichloro-phthalazine-fi-carbonyl,

4:S-dichloro-pyridaz-b-on-l-yl,

2:4difluoro-5-chloro pyrimid-o-yl,

2:4-dichloro-pyrimidine-S-carbonyl,

Z-methyl sulphonyl-5-chloro-o-methyl pyrimid l-yl,

4(4:S-dichloro-pyridaz-6'onl -yl) benzoyl,

4-(4:S-dichloro-pyridaz-(w-onl -yl l-phenyl-sulphonyl and, more particularly striazin-2yl and pyrimidin-2 yl or 4-yl radicals which contain on at least one of the re maining 2,4- and o-positions, a bromine or, preferably, a chlorine atom, a sulphonic acid group, a thiocyanato group, an aryloxy or arylthio group containing an electronegative substituent such as sulphophenoxy, sulphophenylthio, nitrosulphophenoxy, disulphophenoxy and sulphonaphthoxy, or a group of the formula:

wherein Y represents a group of atoms necessary to form a 5- or 6-membered heterocyclic ring which may carry substituents or form part of a fused ring system; or a quaternary ammonium e.g. pyridinium group; or a group of the formula:

U C N wherein R and R each represents the same or differ ent alkyl, cycloalkyl, aryl or aralkyl group, or R and R together form, together with the nitrogen atom, a 5 or 6-membered heterocyclic ring; or a group of the formula:

NR -s-c wherein R and R may be the same or different and each represents a hydrogen atom or an alkyl, aryl or aralkyl group.

In the cases where the pyrimidine ring or triazine ring carries only one such reactive substituent. the said ring may have a non-reactive substituent on the remaining carbon atoms.

By a non-reactive substituent there is meant a group which is bound by a covalent bond to a carbon atom of the triazine or pyrimidine nucleus, which covalent bond is not ruptured under the conditions used for application of the reactive dye.

As examples of such substituents, there may be mentioned, for example, primary amino and hydroxyl groups, also monoor di-substituted amino groups, eth- :rified hydroxyl and etherified mercapto groups; in the :ase of substituted amino groups, this class includes for :xample, monoand di-alkylamino groups in which the alkyl groups preferably contain at most 4 carbon atoms, and which may also contain substituents for example, hydroxyl or alkoxy groups, and phenylamino and naphthylamino groups preferably containing sul- :Jhonic acid substituents; in the case of etherified hyiroxyl and mercapto groups, this class includes, for example, alkoxy and alkylthio groups preferably those of low molecular weight, i.e. having up to 4 carbon atoms and phenoxy, phenylthio, naphthoxy or naphthylthio groups; as particular examples of all these classes there may be mentioned for example:

Methylamino,

ethylamino.

dimethylamino,

B-hydroxyethylamino,

di-(,B-hydroxyethyll-amino.

B-chloroethylamino,

cyclohexylamino,

anilino,

sulphophenylamino,

disulphophenylamino,

N methylsulphophenylamino,

Nfihydroxyethylsulphophenylamino,

mono-, diand tri-sulphonaphthylamino,

sulphoo-tolylamino,

carboxyphenylamino phenylamino,

N-w-sulphomethylphenylamino,

methoxy, ethoxy and butoxy,

phenoxy, methylphenoxy and chlorophenoxy and phenylthio groups.

Chlorine atoms or cyano, nitro, carboxy and carbalkoxy groups in the 5-position of a pyrimidyl radical come into category of non-reactive substituents.

Alternatively the second substituent on a chloro-striazine group may be a radical which carries another cellulose-reactive group, e.g. an anilino or naphthylamino group carrying a B-sulphatoethylsulphonyl group attached to a carbon atom of the ring, but more especially the radical of a diamine carrying a monoor di-chloros-triazine group attached to the second nitrogen atom, i.e. a group of the formula:

and sulphocarboxy wherein Q is the N,N'-divalent radical of an aliphatic, aromatic, or heterocyclic diamine and R represents Cl or an amino, substituted amino or etherified hydroxyl group.

As examples of radicals represented by 0, there may be mentioned, e.g. N,N'-piperazinylene, and radicals of the formula:

wherein R and R independently represent H or an alkyl or hydroxyalkyl group of up to 4 carbon atoms, e.g. methyl, ethyl, B-hydroxyethyl, n-propyl, n-butyl and y-hydroxypropyl, and Q is an aliphatic or aromatic radical, e.g. an alkylene, poly(alkyleneimine) or dialkyloxide radical, e.g. ethylene, propylene, tri-, tetraand hexa-methylenes, C H NHC H -C H (NHC H., and C H OC H or a divalent radical of the benzene or naphthalene series which preferably contains l or 2 sulphonic acid groups, e.g. a monoor disulphophenylene or a disulphonaphthylene radical, or a divalent radical of the stilbene, diphenyloxide, diphenylmethane, diphenylurea, diphenoxyethane or diphenylamine series which preferably contains 1 or 2 sulphonic acid groups.

A special class of the new dyestuffs are those in which the reactive group takes the form of formula (5 the radical R being a second triphenylmethane or xanthene residue linked through a SO Amradical as in formula (l).

The symbol Am may represent e.g. an aniline radical having Z attached to one of the carbon atoms of the benzene ring. More especially, however, Am represents the radical of any aliphatic, aromatic or heterocyclic diamine having an acylatable hydrogen atom on each of the nitrogen atoms, of the kind just discussed in connection with the symbol Q.

The invention also provides a process for the manufacture of the new dyestuffs which comprises reacting a compound of the formula:

wherein the symbols R, R X, Y and n have the meanings stated above and Am represents NH or the radical of a diamine, with the anhydride or halide of an acid of which the acid radical contains a substituent capable of chemically reacting with the fibre to form a chemical bond, or a heterocyclic compound which contains a halogen atom attached to a carbon atom of the heterocyclic nucleus and also a reactive substituent of the kind just stated.

The above process can conveniently be carried out by stirring a mixture of the reactants in an aqueous medium at a suitable temperature, which may be from 0C in the case of cyanuric chloride to 50C or even higher in the case of less reactive acyl halides, anhydrides or heterocyclic compounds. As a general rule it is preferred to add an acid-binding agent during the course of the reaction to maintain the pH within the limits 5 to 8.

The compounds of formula (6) used in the above process can in general be obtained by forming a compound of the formula:

which contain 2 or more halogen, especially chlorine atoms in the ortho position to the nitrogen y Y atoms, eg R 2:3-dichloro-quinoxaline-5- and -6-carbonyl chlo (7) 5 rides,

c (CH )n 2:3-dichloroquinoxaline-5- and -6-sulphonyl chlo- 2 rides,

2:4-dichloro-quinazoline-6- and -7-sulphonyl chlox rides,

10 2:4:6-trichloro-quinazoline-7 and -8-sulphonyl chlorides, 2:4:7- and 2:4:8-trichloro-quinazoline-fi-sulphonyl S0 11 chlorides,

2:4-dichloro-quinazoline-6-carbonyl chloride,

l:4-dichloro-phthalazin-6-carbonyl chloride,

2:4-dichloro-pyrimidine-5-carbonyl chloride, B-(4:S-dichloro-pyridazonyl-1-)propionyl chloride,

by methods known per se, converting this to the sulphon chloride and reacting the latter with ammonia or 1 mole of a diamine of the formula H (Am) H. As examples of the latter, there may be mentioned:

piperazine,

1-(4'-chloroformylphenyl )-4:5-dichloro-6- aliphatic diamines eg alkylene diamines and other Pyridazone,

awdiamino aliphatic compounds l-(4'-chlorosulphonylphenyl)-4:5-dichloro6- pyridazone,

ethylene diamine, 1,2 and 1,3-propylenediamines, l,6-hexylene diamine,

2:4:6-tribromo and trichloro-pyrimidines, 2:426-trifluoro-5-chloropyrimidine, 2:425:6-tetrachloropyrimidine,

diethylene triamine, triethylene tetramine 2-methylsulphonyl-4,S-dichloro-6-methyl pyrimidine di (fi aminoethyl) ether 5-methyl-2:4:6-trichloropyrimidine, aromatic diamines of the benzene and naphthalene 'Q series, more especially those containing l or 2 3 -'I S03 groups eg: 2:4-dichloro-5-mtropyrimidine, and p phen|enediamine 2:4:6-trichloro-5-cyanopyrimidine, I 3 phenylenediamine 4 sulhonic and 4 5-ethoxycarbonyl-2:4-dichloropyrimidine,

disulphonic acids 2:4-dichloropyrimidine-S-carbonyl chloride, l,4-phenylenediamine-2-sulphonic and 2,5- cyanuric fi ig f disulphonic acids, cyanunc on 2 fi-naphthylene diamine-4-sulphonic and 4 8- also primary corldensanfm prpducts of Fyanunc disul home acids bromlde or cyanuric chloride with ammonia, an al- I sma lene diamine 2 and 4 sul honic and 3 kali metal sulphite or thiocyanate or an organic g g acids p mercaptan, hydroxy compound or an organic pri- 4,4-diaminodiphenyl-2-sulphonic and 2,2'- 40 222 3: Secondary amme' for example:

disulphonic acids, ethanol 4,4'-diaminostilbene-2,2'-disulphonic acid, iS0 pml;an0l 4,4'-diaminodiphenylurea-2,2'- and 3,3'-disulphonic phenol acids 1 md -chl ro he ols, 4,4'-diaminodiphenylamine-2,2'-disulphonic acid, g g g n 4,4'-diaminodiphenoxyethane-2,2-disulphonic acid, and p sulphohenols, 4,4-diaminophenylmethane-2,2'-disulphonic acid, thiophenolj 4,4'-diaminoazobenzene-2-sulphonic and 2,2'- thioglycomc acid,

disulphonic acids di-methyldithiocarbamic acid,

N-methyl and N-ethyl-l,4-phenylenediamine-2- sulphonic acids,

mercaptobenzthiazole, thioacetamide,

N-(fl-hydroxyethyl) ethylene diamine. methyl- As examples of halides or anhydrides of acids or hetdimathyin erocyclic compounds which may be used, there may be fithyp mentioned, for example, carbyl sulphate and the anhydiethyp,

drides or acid halides of a-B-unsaturated aliphatic acids mpmpy},

such as chloromaleic anhydride, propiolyl chloride and iso-pr0pyl-,

acryloyl chloride, the acid chlorides of halogenated alibmyp,

phatic acids, eg hexyl and cyclohexylamines,

chloroacetyl chloride, toluidine, sulphochloroacetyl chloride, piperidine, B-bromo and B-chloropropionyl chlorides, morpholine, a-B-dichloro and dibromo-propionyl chlorides, methoxyethylamine,

ethanolamine,

aminoacetic acid,

aniline-2:4-,

2:5- and 3:5-disulphonic acids,

orthanilic, metanilic and sulphanilic acids, 2-, 3- and 4-aminobenzoic acids,

2,2,3,3-tetrafluorocyclobutane carbonyl chloride, B-(2,2,3,3-tetrafluorocyclobutyl) acryloyl chloride, 2,3,3-trifluorocyclobutl -ene carbonyl chloride, B-)2,3,3-trifluorocyclobut-l-enyl) acrylyl chloride, also heterocyclic compounds which contain at least 2 nitrogen atoms in the heterocyclic rings and 4- and S-sulphoQ-aminobenzoic acids, 4- and S-sulpho-o-toluidines, -amino-2-hydroxybenzoic acid, Z-amino-ethanesulphonic acid, amino-naphthalene monoand disulphonic acids and N-methylaminoethane sulphonic acid; also, the secondary condensation products of cyanu ric chloride with: alkali metal sulphites, alkali metal thiocyanates, phenols and thiophenols, containing an electronegative substituent. and compounds of the formula:

1 H-S-C Y 3 3 s a l B-S-C-N (9) and wherein Y R, R, R and R have the meanings stated above.

For introducing a reactive group of the kind described by formula (5), the compound of formula (6) can be reacted with a N,N'-bis-(chloro-striazinyl)diamine in which at least one of the chloro-striazine groups contains two chlorine atoms e.g. the reaction product of any of the diamines mentioned above with two moles of cyanuric chloride, or with one mole of cyanuric chloride and one mole of the primary condensation product of cyanuric chloride and ammonia, a primary or secondary amine or an alcohol or phenol, of the kinds illustrated earlier. When reacting with a bis-(dichloro-s-triazinyl)diamine, the final dyestuff ob tained depends upon the proportions reacted; using equimolar proportions, the dyestuff obtained contains a single triphenylmethane or xanthene residue and a reactive group of formula (5) in which R represents a chlorine atom; on the other hand by using two moles of the compound of formula (6) for each mole of the bis- (dichloro-s-triaziny])diamine, the dyestuff obtained contains two triphenylmethane or xanthene residues linked together by the bis-(chloros-triazinyl)diamine residue.

The invention also provides a process for manufac ture of the new dyestuffs of the invention in which Am represents the radical of an amine or diamine which comprises reacting together a compound of the formula:

with an amine or diamine of the formula:

the symbols R, R X", Y, Z, Am and it having the meanings stated.

The above process can conveniently be carried out by stirring a mixture of the reactants in an aqueous medium, preferably at a temperature of from 10 to 40C and preferably at a pH of from 5 to 7.

The compounds of formula (1 l) can, in general, be obtained by forming a compound of formula (7) above by methods known per se and converting this to the sulphonchloride.

As examples of compounds of formula (12), there may be mentioned:

3- or 4-fi-sulphatoethylsulphonyl aniline,

4-methyl-3-B-sulphatoethylsulphonyl aniline,

2-methoxy-5-B-sulphatoethylsulphonyl aniline also the monocondensation products of the diamines and the halides or anhydrides of acids or heterocy clic compounds disclosed above.

The dyes of formula (I) wherein the cellulosereactive group Z is a s-triazine nucleus substituted by a chlorine or bromine atom and an amino or substituted amino group can also be obtained by reacting a cellulose-reactive dye of formula 1) in which Z is a dichloroor dibromo-s-triazine group with ammonia or an amine.

The cellulose-reactive dyes of formula (1) wherein the cellulose-reactive group is a s-triazine nucleus substituted by SO H, a quaternary ammonium group or a group of formulae (2), (3) and (4), can be obtained by reacting a cellulose-reactive dye of formula (I) con taining a s-triazine group substituted by at least one chlorine or bromine atom with an alkali metal salt of sulphurous acid, a tertiary amine or a compound of formulae (8), (9) and (10).

These reactions also may be carried out by stirring the reactants together in an aqueous medium at a suitable temperature which, in general, will be within the range of 30-95C, and maintaining the pH at an appropriate value by addition of an acid-binding agent. In the case where ammonia or amine is the reactant, an excess can be used to act as acid-binding agent. Otherwise, sodium carbonate or sodium hhdroxide may conveniently be used as acid-binding agent.

The new dyestuffs may be used for colouring a variety of textile materials for example natural proteins such as wool, silk and leather, superpolyamides and, more especially natural or regenerated cellulose textile materials such as cotton, linen and viscose rayon. For colouring the cellulose materials the dyestuffs are preferably applied by printing or dyeing the material in conjunction with a treatment with an acid-binding agent, e.g. caustic soda, sodium carbonate, sodium triphosphate or sodium silicate, which may be applied to the textile material before during or after the application of the dyestuff. When so applied the new dyestuffs react with the cellulose and yield brilliant yellowish-red to bluish-red shades of excellent fastness to washing and surprisingly high fastness to light. In addition, many of the new dyestuffs give shades which fluoresce when exposed to ultra-violet light. This property can be used to advantage in the production of multicoloured materials, e.g. by conventional textile printing methods used with cellulose-reactive dyes or by more recently developed methods in which a plurality of reactive dyes are applied in streams to a moving textile fabric in order to produce a pattern; eg as described and claimed in U.K. Specification No. 1,243,403. The dyes can, e.g. be used in conjunction with fluorescent brightening agents of high substantivity to broaden the range of shades obtainable under the influence of UV. light.

The invention is illustrated but not limited by the following examples in which parts are by weight:

EXAMPLE 1 5 parts of the anhydrous dyestuff, CI Acid Red 52 are added to 80 parts of chlorosulphonic acid at such a rate that the temperature does not rise above lC. The solution is then heated to 70 and stirred for l7 hours, then cooled and poured into 450 parts of ice and 150 parts of water. The precipitate is rapidly filtered off, washed quickly with 100 parts of ice-cold water and added to a solution of parts of N-fihydroxyethylethylene diamine in 100 parts of water. The mixture is stirred at room temperature and pH 9-l0 for 2 hours, then the solid product is filtered off and washed with 50 parts of ice-cold water.

2 parts of cyanuric chloride are dissolved in parts of warm acetone and the solution is added to a stirred mixture of 50 parts of ice, 50 parts of water and 1 part of dispersing agent. A solution of L7 parts of metanilic acid in 50 parts of water at O5, pH 6-7 are added to the suspension and the mixture is stirred at 0-5, pH 6-7 for one-half hour. The mixture is filtered, the product from paragraph 1 is added to the filtrate and the mixture is stirred at 3540, pH 9 for l /z hours. Salt is added to give a concentration of 100 g/l and the precipitate is filtered off and dried.

The product contains 1. l atoms of hydrolysable chlorine per mole of dyestuff. When applied to cellulosic fibres in conjunction with an acid-binding agent, it dyes the fibres in brilliant bluish-red shades with good fastness to washing.

EXAMPLE 2 If the 5 parts of N-B-hydroxyethylethylenediamine used in Example 1 are replaced by ID parts of 60% aqueous ethylenediamine, the dyestutf obtained dyes cellulosic fibres is brilliant bluish-red shades of similar fastness properties.

EXAMPLE 3 to the sulphonyl chloride as described in Example l.

the solution cooled to 0-5 and added to a suspension of cyanuric chloride (3 parts), water parts), ice (50 parts) and dispersing agent (I part). The mixture is stirred for 1 hour at 0-5, pH 6-7 then filtered, and with 2 parts of potassium dihydrogen phosphate and l part of disodium hydrogen phosphate are added followed by sufficient salt to give a concentration of 200 g/l. The precipitate is filtered off, pasted with 1 part of potassium dihydrogen phosphate and dried in vacuo at room temperature. The product contains 2 atoms of hydrolysable chlorine per mole of dyestuff. When applied to cellulosic fibres in conjunction with an acidbinding agent, it dyes the fibres in brilliant reddishmauve shades with good fastness to washing.

EXAMPLE 4 If the l,4-phenylenediamine-2-sulphonic acid used in Example 3 is replaced by an equal quantity of l,3- phenylenediamine-4-sulphonic acid a dyestuff with similar shade and fastness properties is obtained.

EXAMPLE 5 10 parts of anhydrous Cl Acid Red 52 are converted to the sulphonyl chloride as described in Example l. The isolated paste is quickly added to parts of cold ammonia solution (d= 0.88) and the mixture is stirred at room temperature for 2 hours. The sulphonamide is precipitated by acidifying to pH 7 with concentrated hydrochloric acid (36Tw) and filtration and is then suspended in a mixture of acetone (40 parts), water (100 parts), and wetting agent (l part) at 0-5, pH [0-1 l and stirred vigorously while a solution of 5 parts of cyanuric chloride in 30 parts of acetone are added during the course of 1 hour, the pH during the course of the addition and for a further one-half hour being maintained at 10-1 1 by occasional addition of 2N sodium carbonate solution, and the temperature being maintained at 0-5 by external cooling. The pH is then adjusted to 6-7 by dropwise addition of 2N hydrochloric acid solution and the dyestuff isolated by filtration, washed with 20 parts of ice cold water and dried in vacuo. It contains 1.8 atoms of hydrolysable chlorine per mole of dyestuff and dyes cellulosicfibres in conjunction with an acid-binding agent in fast bluish-red shades.

The examples in the following table are of dyestuffs in which the sulphonyl chloride from Cl Acid Red 52 are condensed with an excess of the diamine in column ll and the product so obtained acylated with the acylating agent described in column Ill.

Example ll lll Shade on Cellulose 6 4,4'-Diaminodiphenylether-3,3-disulphonic acid Cyanuric chloride Bluish-rcd 7 4,4 -Diaminostilbene-2,2'-disulphonic acid do. do. 8 4,4'-Diaminodiphenyl-2,2'-disulphonic acid do. do. 9 4,4'-D1arn|no-3,3'-dimethyldiphenyl2.2'-disulphonic acid do. do. It) 4,4'-dlamino-3,3'-dimethoxydiphenyl-2,2'-disulphonic acid do. Violet EXAMPLE I l The isolated paste is quickly added to a solution of 4.5 parts of l,4-phenylenediamine-Z-sulphonic acid in parts of water at pH 7 and 20C. The mixture is stirred at room temperature, pH 6-7 for 2 hours, a clear solution being obtained. Salt is added to give a concentration of l50 g/l and the precipitate is filtered off. The filter cake is dissolved in 100 parts of water at pH 6-7,

10 Parts of the anhydrous dyestuff, Cl Acid Red 50, are converted to the sulphonyl chloride in the same 65 way as for Cl Acid Red 52 in Example I. The isolated pH 6-7 for 18 hours, a clear solution being obtained. 200 Parts of sodium chloride are added and the product is isolated by filtration. It is then dissolved in 200 parts of water. 50 parts of ice and one part of dispersing l2 dimethylamino-9-(2',4'-disulphophenyl)xanthene gives. by similar means, a dyestuff which. when applied to cellulose in the presence of an acid-binding agent dyes the fibre in brilliant bluish red shades of good fast agent, and to the solution stirred at 5 are added a ness to washing. flflfi paflofcy'fmullc zi g gj ff The examples in the following table are given in z s e a z z g g g 3 which compounds of formula (13) having the groups fig t e 2: is 21 d t R, R given in column II are converted to the monog H Paris 0 f EST um 'f ate sulphonyl chloride and reacted with 1 mole of the dif "Inmate y mlxe parts 0 9 10 amine in column Ill and the product acylated with the slum dihydrogen orthophosphate and 0.2 parts of disoagem in Column W dium hydrogen orthophosphate and dried in vacuo at room temperature. On analysis the deystuff is found to contain 2.2 moles of hydrolysable chlorine per mole of dyestuff and, when applied to cellulosic fibres in conjunction with an acid-binding agent, to dye the fibre in R 3 NR 3 brilliant pink shades with good fastness to washing. 1 2

In the examples in the following table the sulphonyl 1 1 chloride from C1 Acid Red 50 is condensed with an ex- 3 YR cess of the diamine in column II and the product then 3 (12'? acylated with the acylating agent in column lll.

EXAMPLE 44 Replacement of Cl Acid Red 52 in Example l with an equivalent weight of the acid dyestuff 3,6-bis-N,N-

Example ll lll Shade on Cellulose l 2 Ethylenediamine 2 4-dichloro-6-( 3 '-sulphophenylamino )-s-triazine I Pink 13 2.5diaminobenzene sulphonic acid 2,4-dichloro-6-amino-s-triazine do. I 4 N B-hydroxyethylethylenediamnne 2,4-dichloro-6-( 3 '-sulphophenylamino ]-s-triazine do. 15 2.4-diaminobenzene sulphonic acid 2,4-dichloro-6-(2'.5'-disulphophenylamino)-s-triazine do. to 2,5diaminobenzene sulphonic acid 2.4-dichloro-6-(5'-sulphonaphth-2'-ylamino)-striazinc do. 7 do. 2.4-dichloro-6-( Nw-sulphomethylanilino )-s-triazine do. I 8 do. 2.4,6-trichl0ropyrimidine do. 9 do. 2.4,5,fi-tetrachloropyrimidine do. 20 do. S-cyano 2,4,5-trichloropyrimidine do. 21 do. 2,3,dichloroquinoxaline-carbonyl chloride do. 22 do. 4,5-dichloro-6-methyLZ-methylsulphonyl pyrimidine do. 23 do. B-[4.5dichloropyridaz-3'onyl-l )propionyl chloride do. 24 do. 3,6dichloropyridazine-4-carbonyl chloride do. 25 do. 2,4dichloropyrimidine-S-sulphonyl chloride do. 26 2,5-diaminohenzene sulphonic acid 2-chlorobenzthiazole6-carbonyl chloride Pink 27 do. 2,4,fi-trifluoro-5-chloropyrimidine do. 23 do. [H 2,2,3.3-tetrafluorocycl0butyl)acryloyl chloride do. 29 do. Carbyl sulphate do. 30 do. 2.4-dichloro-6-[3-(2"-ch1oro-4"-amino-s-triazindo.

6"-ylamino)4'-sulphophenylaminol-s-triazine 3 i do. 2,4-dichloro-6-[4'-(2"-chloro-4"-m-sulphophenyldo.

amino s'triazin-o"-ylamino)-3'-sulphophenylamino] s-triazine 32 do. 2.5-bis-(2,4'-dichloro-s-triazin-6'-ylamino)- do.

benzene-l,4-disulphonic acid (l mole) 33 do. 4,4-bis-(2".4"-dichloro-striazin6"-ylamino)- do stilbene-2.2'-disulphonic acid [0.5 mole) 34 do. 2.4-dichloropyrimidine-S-carbonyl chloride d 35 do. B-chloroethylsulphonyl-endomethylene-cycIohexane do.

carboxylic acid chloride 36 do. 2.4-dichloro-6(4'-sulphophcnylaminol s-triazine do, 37 lidiuminobenzcne sulphonic acid 2.4-dichlor0-6-(2'-methyl-S'-sulphophenylamino)- Pink s-triazine 38 do. 2 4dichloro-6-( 2 '-carboxy 4'-sulphophenylamino d s-triazine 39 do. 2,4dichloro-6-(4 '-sulphophenoxy )s-triazine d 40 do. 2,4-dichloro--methoxy-s-triazine do. 4 I do. 2,4-dichloro6-(6'-sulph0naphth-2'-ylamino)-sd triazine 42 do. 2.4 dichloro-6(5'.7'-disulphonaphth-2'-ylamino]- d s-triazine 43 do. 2.4-dichloro-6-( 3 '.6',8'-trisulphonaphth-l '-ylamino)- do.

s-triazine Example ll III IV Shade on Cellulose 45 R, R, nCH,CH,CH, 2,5-diaminobenzene 2,4-dichloro-6-msu|phophenyl- Bluish-red sulphonic acid amino-s-triazine R, H 46 R CH CH, do. do. Yellowishred R, R, H 47 R, R, CH;, do. do. do.

R, H 4B 5,, R, -CH,CH,CH,CH do. do. Bluish-red a 49 R,, R, do. do. do.

RCH,CH,CH,CH,CH,

a 50 2,. R,H= -CH,CH,OCH,CH,- do. do. Red

3 51 R, 4-nitrophenyl 2,5-diaminobenzene 2,4-dichloro-6-m-sulphophenyl- Violet sulphonic acid amino-s-triazine R, R, H 52 R, 3-nitropheny] do. do. do.

R, R, 53 R, 4-chlorophenyl do. do. do.

R, R, H 54 R, 4-bromophenyl do. do. do.

1 55 R, 4-trifluoromethyl do. do. do.

phenyl R, R, H 56 R, 3,5-dichlorophenyl do. do. do.

R, R, H

EXAMPLE 57 10 Parts of the anhydrous dyestuff Cl Acid Blue I are converted to the monosulphonyl chloride in a similar manner to Example 1. The paste so obtained is added to a solution of parts of l,4-phenylenediamine-2- sulphonic acid in 600 parts of water and the mixture is stirred at room temperature and pH 6-7 until a clear solution is obtained. 175 Parts of sodium chloride are added and the precipitate is filtered off and redissolved in 200 parts of water. The solution is cooled to 0-5, and 50 parts of ice and 1 part of dispersing agent are added. A solution of 2 parts of cyanuric chloride in parts of acetone are then added and the mixture is stirred at 05, pH 67, for 2 hours, screened and the dyestuff isolated by salting to sodium chloride. The product is isolated by filtrating, intimately mixed with l part of potassium dihydrogen orthophosphate and 0.5 parts of disodium hydrogen orthophosphate and dried in vacuo. When applied to cellulosic fibres in conjunction with an acid-binding agent, the dyestufi' colours the fibres in brilliant greenish-blue shades fast to washing.

EXAMPLE 58 In place of the 10 parts of Cl Acid Blue 1 used in Example 57, there is used an equivalent amount of the dyestuff made by the condensation of benzaldehyde- 2,4-disulphonic acid and N,N-diethyl-m-toluidine and subsequent oxidation of the intermediate leuco derivative. A dyestufi' having similar shade and properties is obtained.

EXAMPLE 59 In place of the 10 parts of Cl Acid Blue 1 used in Example 57 there is used an equivalent amount of the dyestuff made by the condensation of benzaldehyde- 2,4-disulphonic acid and Z-N-ethylamine-l,4-xylene and subsequent oxidation of the intermediate leuco derivative. A dyestuff having similar shade and properties is obtained.

Example 60 To a solution of 8.0 parts of the dichlorotriazinyl compound prepared in Example 3 in 200 parts of water, is added a solution of 1.6 parts of p-aminobenzoic acid in 50 parts of water. The mixture is stirred at 3540C for 4 hours maintaining the pH at 67 by simultaneous addition of 2N sodium carbonate solution as required. The dyestuff is precipitated by addition of sodium chloride, filtered and dried.

When applied to cellulose textiles in the presence of an acid-binding agent it gives brilliant bluish-mauve shades with good fastness to washing.

ln place ofthe p-aminobenzoic acid used above there may be used an equivalent amount of any of the following products:

N-methylmetanilic acid Example 61 m-aminobenzoic acid Example 62 2-naphthylamine-4,8-disulphonic acid Example 63 aniline-3,5-disulphonic acid Example 64 Z-aminotoluened-sulphonic acid Example 65 3-fi-sulphatoethylsulphonylaniline Example 66 4-l3-sulphatoethylsulphonylaniline Example 67 phenol Example 68 when a dyestuff similar in shade is obtained. On cellulose textiles they have good fastness to wet treatments.

Examples to 68 inclusive can alternatively be made by replacing the cyanuric chloride in Example 3 by the primary condensation product of cyanuric chloride and the appropriate compound named in the above table, reaction being carried out at 45C until one mole of HCl has been liberated. Similarly many of Examples 1 to 59 can be obtained by a similar method to Example 60, i.e. by reacting the appropriate compound of formula (6) with cyanuric chloride, followed by reaction of the product with ammonia or the appropriate amine; thus -Continued of water at with stirring. A solution of 2 parts of tri- Exumple Amine methylar nine in 5 parts of water is then added and the disulphoanmno) Sui-mm mixture ISSIII'I'BCl for minutes. Thepl-l of the mixture 3 sulphanilic acid IS then ad usted to 7.0 by the dropwlse addition of hy- 37 m p p 5 5 drochloric acid (36Tw) and the dyestuff is precipi- 38 Z-amlno-S-sulphobcnzoic ucld 39 phen0\ 4 u]phOn-|c acid tated by the addition of sodium chloride. The precipi- 2L gpn ny: i g-g ip i a tate is filtered off and dried at 20.

Una t amine lsu mic a 43 1magmhgdamincgbxytrislllghonicczcid When applied to cellulosic materials in con unction 44-56 mctanilic acid with an acid-binding agent the dyestufi yields bright bluish-mauve shades.

EXAMPLE 76 Further examples are given in the Table below when Replacement of the trimethylamine in Example 75 by compounds of formula (13) having the indicated an equivalent amount of l,4-diazabicyclo[2,2,21octane means of R R and R are converted to the monosul- 15 gives a dyestuff of similar shade and properties. phonyl chloride and reacted with one mole of the di amine in column lll, acylated with cyanuric chloride EXAMPLE 77 and the product finally condensed with the compound Replacement ofthe trimethylamine in Example 75 by in Column IV. 20 an equivalent of pyridine and heating the solution to Example ll [ll lV Shade on Cellulose 69 R CH3CH2 l,4phenylencdiaminemetanilic acid Brilliant 2-sulphonic acid Bluish-red R CH; R1 H 7'0 do. do. sulphanilic acid do. 7| do. ljphenylcnediaminc- 2-aminotoluene-4- do. 4-sulphonic acid sulphonic acid 72 do. do. 5sulphoanthranilic acid do. 73 do. do. ammonia do.

EXAMPLE 74 85C until quaternisation is complete, as judged by esti- A solution of 8.5 parts of the dyestuff prepared in Example l in 200 parts of water is stirred at 60C. To the solution is then added 1 part of pyridine and 2 parts of sodium sulphite and the solution stirred at 60C until the chlorine atoms have been replaced by SO H, as judged by estimation of liberated sodium chloride. The dyestuff is precipitated by addition of sodium chloride and dried. When applied to cellulose it gives brilliant bluish-red shades which are fast to washing.

In place of the dyestuff of Example 1 used above there may be used an equivalent amount of any of the dyestuffs ll to 15 inclusively. When applied to cellulose they give pink shades with good fastness to washing.

EXAMPLE 75 To a solution of the dichlorotriazinyl compound prepared in Example 3 in 200 parts of water is added a solution of 2.6 parts of aniline-3,5-disulphonic acid in 500 parts of water. The mixture is stirred at 40 for 4 hours. maintaining the pH at 67 by simultaneous addition of 2N sodium carbonate solution as required. The product is isolated by the addition of sodium chloride, collected by filtration and redissolved in 200 parts mation of liberated chloride ion, gives a dye which provides bluish mauve shades on cellulose with good fastness to washing.

EXAMPLE 78 If in Example 77, nicotinic acid is used in place of pyridine a similar product is obtained.

EXAMPLE 79 6 parts of anhydrous Cl acid Red 52 are converted to the sulphonyl chloride as described in Example 1. The isolated paste is quickly added to a stirred solution of 4 parts of 4-B-sulphatoethylsulphonylarniline in 300 parts of water and 1 part of dispersing agent. The mixture is stirred at 2025, pH 5.5 6.5 for 3 hours and then screened. The dyestuff is obtained by salting to 25% w/v sodium chloride, and is collected by filtration and dried in vacuo at 40. When applied to cellulosic fibres in conjunction with an acid-binding agent, it dyes the fibre in brilliant bluishred shades with good fastness properties.

The following table describes further Examples of the invention obtained in a similar manner to Example 79 by treating a compound of formula (2) in which the two Ys represent O and having the meanings of R, R and 11 indicated in columns 2, 3 and 4 with chlorosulphonic acid, and reacting the derived sulphonchloride with the amine named in column 5.

1 7 l 8 Example R, R N Amine Shade on cellulose 80 CH CH CH,CH O 3-(B-sulphatoethylsulphonyl)-aniline Bluish-red 8 I do. do. 2-methoxy-S(fl-sulphatoethylsulphonyl)-aniline do. 8 2 do. do. 0 2-methoxy5-methyl-4-( B-sulphatoethylsulphonyl )-aniline do. 83 do. H I do. Yellowish-red 84 do. do. 2-methoxy-5(B-sulphatoelhylsulphonyl)-aniline do, 85 do. do. I 3-(B-sulphatoefl1ylsulphonyl)-aniline do. 86 do. do. I 4-(B-sulphatoethylsulphonyll-aniline do. 87 CH CH 0 d0. Bluish-red 88 CH,CH, H 0 3-(B-sulphaloethylsulphonyl)-aniline Yellowishq'gd 89 CH; do. I do. do. 90 CH;CH CH, (10. l do. 9i CH CH,CH,CH, do. I do. do. 92 CHgCHgCHgCH-2CH2 O 4-(flsulphatoethylsulphonyl)-aniline B| i hd 93 CHgCHICH2 H" 0 o do. 94 CH,CH -O-CH;CH; 0 0 YelIowish-red 95 CH,CH ,-SO CH CH= 0 B-(B-sulphatoethylsulphonyl )-aniline d 96 C,H C,H 0 Z-(B-aminoethylamino)-4-chloro-6-rn- Bluishq'ed sulphoanilino )2-s-triazine 97 H CH 0 2-( 4 "amino-3 '-sulphoanilino )-4-chloro-6- do.

(m-sulphoanilino)s-triazine We claim: diamino-3,3'-dimethyldiphenyl-2,2'-disulphonic A Compound 0f the formula acid and 4,4'-diamino-3,3'-dimethoxydiphenyl- 1 1 2,2'-disul honic acid, the said 80 bein attached R n p g to one of the two nitrogens of said diamine and the N said Z being attached to the other of said diamine 'trogens and m Z has the formula c H CH 2 n (ca a -Q Ca; 1 i

SO Am Z C 2 I Cl wherem tgz z hydrogen or alkyl havmg 1 carbon wherein B 15 selected from the group consisting of Cl;

NH anilino substituted b u to 2 substituents se- R represents alkyl having 1-4 carbon atoms, phenyl or phenyl having 1-2 substituents selected from the group consisting of N0 Cl, Br, and CF;,;

each n independently represents 0 or I;

X represents 50;," or CO;

Am is NH or a diamine selected from the group consisting of ethylene diamine, N-B-hydroxyethyl ethylene diamine, l,4-phenylenediamine-Z-sulphonic acid, l,3-phenylenediamine-4-sulphonic acid, 4,4- diaminodiphenylether-3,3-disulphonic acid, 4,4- diaminostilbene-2,2-disulphonic acid, 4,4- diaminodiphenyl-2,2'-disulphonic acid, 4,4-

lected from SO H, CH and COOH; N-m-sulphomethylanilino', N-methyl sulphoanilino; aminodisulphoanilino; naphthylamino substituted by up to 3 SO H groups; sulphatoethylsulphonylanilino; methoxy; phenoxy; sulphophenoxy; and sulphoanilino and disulphoanilino, both of which are further substituted by a member selected from 2-chloro-4-amino-s-triazin-fi-ylamino, 2- Chl0r0-4-sulph0phenylamino-s-triazin-6-ylamin0 and dichloro-s-triazinylamino.

2. A compound as claimed in claim 1 having the formula: 

1. A COMPOUND OF THE FORMULA
 2. A compound as claimed in claim 1 having the formula: 